Gang-saw.



PATENTED DEC. 12, 1905.

J. B. W. BRYNING.

GANG SAW.

APPLICATION FILED AUG. 4, 1905.

WWW:

WM 5. 5M4.

UNITED STATES PATENT OFFICE.

, JAMES E. BRYNING, OF PHILADELPHIA, PENNSYLVANIA.

GANG-SAW.

Specification of Letters Patent.

Patented Dec. 12, 1905.

Application filed August 4, 1905. Serial No. 272,697-

stonesuch, for instance, as granite, marble,

blue-stone, and limestone; and the said invention has for one of itsobjects the providing of a saw that shall be strong, durable, andcomparatively inexpensive to manufacture.

A further object is to provide simple means for adjusting the saw inorder thatstone may be roughed out, shaped, and finished.

A still further object is to so construct the saw that the operation ofwhich will materially decrease the cost of stone-molding.

The invention consists of the improvements hereinafter described andfinally claimed.

The nature, characteristic features, and scope of the invention will bemore fully understood from the following description, taken inconnection with the accompanying drawings, forming part hereof, and inwhich Figure 1 is a side elevational view, upon a reduced scale, of asaw embodying the invention. Fig. 2 is a central sectional view of aseries of saws, illustrating the position of the blades during theweakening or roughing-out stage. Fig. 3 is a similar view of one saw,illustrating the position of the blades during the stage of shaping ormolding. Fig. 4 is a sectional view of one of the saws, illustrating theposition of the blades during a very fine or finishing stage. Fig. 5 isa similar View of a modified form of the invention, and Fig. 6 is abottom plan View of Fig. 5.

Referring to the drawings, a represents the respective heads of thegang-saw, and suitably carried thereby are beams b, I-beams beingpreferred. Bolted or otherwise secured thereto throughout the length ofthe beams at suitable distances apart are clamps or jaws 0. As shown,these jaws straddle the beams and are adapted to support and havedepending therefrom a plurality of short bladesections cl. The bladesmay be of various sizes, according to the character of the work to bedone. Suitably spaced between the blades there may be wooden separatorse, and a steel plate f may be interposed between the base of the I-beamand the top of the blades. The various described parts are then firmlyclamped together by means of bolts 9. Referring now more particularly toFig. 2, the saw is equipped to weaken or rough out, as it were, theportions of stone desired to be gotten rid of in molding a stone base.In this connection it will be noticed that the separators e are spacedat some distance apart. The stone in its described state is then turnedover to a stone-cutterto be hewn out.

As shown in Fig. 8, the blades are shown as being comparatively closetogether and arranged so as to shape or mold the stone after thestone-cutter has completed his work. If

a very fine finish is desired, the separators may be dispensed withentirely, as shown in Fig. 4:, and blades used of a small degree ofthickness. In this way the blades act in the capacity of a solid block.

In the modified form shown in Fig. 5 a solid block of cast-iron orcast-steel k may be used as'a finishing-tool, and in such eventdiagonally-arranged grooves i are required in order to permit of theescape of sand or shot used in the operation of the device.

Having thus described the nature and objects of the invention, whatIclaim as new, and desire to secure by Letters Patent, is

1." In combination a gang-saw and its complemental heads of a beamcarried thereby, clamps secured to the beam and a plurality ofblade-sections supported by and depending from said clamps,substantially as described.

2. In combination a gang-saw and its complemental heads of a beamcarried thereby, clamps secured to the beam, a plurality ofblade-sections supported by and depending from said clamps, andseparators interposed between said blades, substantially as described.

3. In combination a gang-saw and its complemental heads of an I-beamcarried thereby, a series of clamps secured to the beam, a plurality ofshort blade-sections supported by and depending from said clamps andsepara tors interposed between said blades, substan tially as described.

In testimony whereof I have hereunto set my hand and seal this 1st dayof August, 10 1905.

JAMES E. W. BRYNING. [L. s.]

In presence of- W. J. JACKSON, HENRY B. TAWREsEY.

